What are the best methods to "Clear the 6th bit" of an integer?

Question

What are the best methods to "Clear the 6th bit" of an integer?

And, is your solution platform independent? (32 or 64 bit integer, etc). If not, can you give a solution that is platform independent?

Update: we don't know whether that bit is set or unset when it was given... also, any language is ok... i know of a solution that is platform independent that requires 2 operators... maybe there are various methods or simpler solutions.

Update: more clearly: clear the 6th least significant bit of an interger.

Answer 1

x & (~(1 << 6))

Answer 2

x&= ~(1 << 5)